连年施用不同浓度硫肥对玉米田土壤有效硫含量和pH值的影响  

Effect of Continuous Application of Different Concentrations of Sulfur Fertilizer on the Effective Sulfur Content and pH of Corn Field Soil

作　　者：李哲 胡楠[2] 崔帅 张毓 高强[1] LI Zhe;HU Nan;CUI Shuai;ZHANG Yu;GAO Qiang(School of Resources and Environment,Jilin Agricultural University,Changchun 130118;Jilin Academy of Agricultural Sciences,Changchun 130033,China)

机构地区：[1]吉林农业大学资源与环境学院,长春130118 [2]吉林省农业科学院,长春130033

出　　处：《玉米科学》2025年第3期87-92,共6页Journal of Maize Sciences

基　　金：国家重点研发计划项目“沙土区风蚀防控和高效用水型的梨树模式研发与示范”(2022YFD1500703)。

摘　　要：通过连续5年玉米定位施硫试验,在两种土壤类型(黑土、风沙土)、两种硫肥(硫磺、硫酸铵)、4个硫浓度梯度(0、30、90、150 kg/hm^(2))处理下,探讨第5年玉米各生育时期及各年际间土壤有效硫和pH值的变化规律。结果表明,风沙土有效硫含量年际间变化幅度较黑土偏高,高浓度硫肥处理的土壤有效硫含量逐年递增,增长趋势从第3年开始趋于平缓;低浓度硫肥处理始终呈上升趋势。土壤有效硫含量在玉米营养生长期降低速率较快,后期变缓。低浓度硫肥处理的土壤pH值呈动态平衡趋势;高浓度硫肥处理的土壤pH值随着施硫年份逐渐降低,下降趋势从第4年开始逐渐变缓。在玉米营养生长期,高浓度硫肥处理p H值降低,在吐丝期出现上升趋势,灌浆期达到最大值。玉米在营养生长期对硫养分吸收量较大,硫肥可作为基肥使用。在硫肥选择上,硫磺更适合黑土,硫酸铵更适合风沙土。Through five consecutive years of corn targeted sulfur application experiments,two soil types(black soil and sandy soil),two sulfur fertilizers(sulfur and ammonium sulfate),and four sulfur concentration gradients(0,30,90,150 kg/ha)were conducted to explore the changes in soil available sulfur and pH at different growth stages and between years of corn in the fifth year.The results showed that the interannual variation of effective sulfur con⁃tent in sandy soil was higher than that in black soil.The effective sulfur content in soil with high concentration sul⁃fur fertilizer increased year by year,and the growth trend began to flatten from the third year.The treatment with low concentration sulfur fertilizer always showed an upward trend.The effective sulfur content in soil decreases rapidly during the nutritional growth period of corn,but slows down in the later stage.The soil pH of low concentration sul⁃fur fertilizer treatment will show a dynamic equilibrium trend through soil buffering regulation,while the soil pH of high concentration sulfur fertilizer treatment will gradually decrease with the year of sulfur application,but the down⁃ward trend will gradually slow down from the fourth year onwards.During the nutritional growth period of corn,high concentration treatment will result in a decrease in pH,while an upward trend will occur during the silking stage and reach its maximum value during the filling stage.Corn has a higher absorption of sulfur nutrients during its nu⁃trient growth period,and sulfur fertilizer can be used as a base fertilizer.In terms of sulfur fertilizer selection,sulfur is more suitable for black soil and ammonium sulfate is more suitable for sandy soil.

关 键 词：玉米 施硫量 土壤有效硫 土壤PH值 

分 类 号：S513.062[农业科学—作物学]